<template>
    <div>
        <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>商品管理</el-breadcrumb-item>
            <el-breadcrumb-item>添加列表</el-breadcrumb-item>
          
          </el-breadcrumb>
          <!-- 卡牌 -->
          <el-card>
              <!-- 警告提示 -->
            <el-alert
            title="添加商品信息"
            type="info"
            center
            show-icon :closable="false">
          </el-alert>
          <!-- 步骤条 -->
          <el-steps   :active="activeIndex-0" finish-status="success" align-center>
            <el-step title="基本信息"></el-step>
            <el-step title="商品参数"></el-step>
            <el-step title="商品属性"></el-step>
            <el-step title="商品图片"></el-step>
            <el-step title="商品内容"></el-step>
            <el-step title="完成"></el-step>
          </el-steps>

          <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px"  label-position="top">
          <el-tabs :tab-position="'left'"  v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked">
            <el-tab-pane label="基本信息" name="0"> 
                <el-form-item label="商品名称" prop="goods_name">
                <el-input v-model="addForm.goods_name"></el-input>
              </el-form-item>
              <el-form-item label="商品价格" prop="goods_price" >
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            
            <el-form-item label="商品重量" prop="goods_weight">
                <el-input v-model="addForm.goods_weight"  type="number"></el-input>
              </el-form-item>
              <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number"  type="number"></el-input>
            </el-form-item>
            
            
            <el-form-item label="商品分类" prop="goods_cat">
                <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange" expand-trigger="hover"></el-cascader>
              </el-form-item>
            
            
            </el-tab-pane>
            <el-tab-pane label="商品参数" name="1">
                <el-form-item :label="item.attr_name"  v-for="item in manyTabData" :key="item.attr_id">
                    <el-checkbox-group v-model="item.attr_vals">
                        <el-checkbox :label="cb" border v-for="(cb,i) in item.attr_vals" :key="i"></el-checkbox>
                      
                      </el-checkbox-group>
                  </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品属性" name="2">
                <el-form-item :label="item.attr_name"  v-for="item in onlyTabData" :key="item.attr_id" >
                    <el-input v-model="item.attr_vals[0]"></el-input>
                  </el-form-item>
            </el-tab-pane>
            <el-tab-pane label="商品图片" name="3">
                 <!-- action表示图片要上传api地址 -->
                <el-upload

  action="http://127.0.0.1:8888/api/private/v1/upload"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  :headers="headerObj"
  :on-success="handleSuccess"
  list-type="picture">
  <el-button size="small" type="primary">点击上传</el-button>
 
</el-upload>
            </el-tab-pane>
            <el-tab-pane label="商品内容"name="4">
<!-- 富文本编辑器 -->
     <quill-editor v-model="addForm.goods_introduce"></quill-editor>
        <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>

            </el-tab-pane>
          </el-tabs>
        </el-form>
          </el-card>
          <!-- 对话框 -->
          <el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%"
   >
   <img :src="previewPath" alt="" class="previewImg">
   
</el-dialog>
    </div>
</template>
<script>
    import _ from 'lodash'
export default {
    data() {
        return {
            activeIndex:'0',
            addForm:{
                goods_name:'',
                goods_price:0,
                goods_weight:0,
                goods_number:0,
                // 商品所属的分类数组
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addFormRules:{
                goods_name: [
            { required: true, message: '请输入商品名称', trigger: 'blur' },
            { min: 1, max: 10, message: '长度在 1 到 10 个字符', trigger: 'blur' }
          ],
          goods_price: [
            { required: true, message: '请输入商品价格', trigger: 'blur' },
             
          ],
          goods_weight: [
            { required: true, message: '请输入商品重量', trigger: 'blur' },
             
          ],
          goods_number: [
            { required: true, message: '请输入商品数量', trigger: 'blur' },
             
          ],
          goods_cat: [
            { required: true, message: '请选择商品分类', trigger: 'blur' },
             
          ]
            },
            cateList:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children'
            },
            manyTabData:[],
            onlyTabData:[],
            headerObj:{
                Authorization:window.sessionStorage.getItem('token')
            },
           previewPath:'',
           previewVisible:false
        }
    },
    created() {
        this.getCateList()
    },
    methods: {
       async getCateList(){
           const{data:res} = await this.$http.get('categories')
           if(res.meta.status!==200){
               return this.$message.error('获取商品分类数据失败')
           }
           this.cateList=res.data
           console.log(res.data)
        },
        handleChange(){
                  console.log(this.addForm.goods_cat)
                  if(this.addForm.goods_cat.length!==3){
                      this.addForm.goods_cat=[]
                  }
        },
        beforeTabLeave(activeName,oldActiveName){
              if(oldActiveName==='0'&&this.addForm.goods_cat.length!==3){
                  this.$message.error('请先选择商品分类')
                  return false
              }
        },
      async  tabClicked(){
            if(this.activeIndex==='1'){
                const{data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'many'}})
           if(res.meta.status!==200){
               return this.$message.error('获取参数列表失败')
           }
           res.data.forEach(item=>{
            item.attr_vals =item.attr_vals.length===0 ? [] : item.attr_vals.split(',')
           })
        console.log(res.data)
           this.manyTabData=res.data
            }else if(this.activeIndex==='2'){
                const{data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{params:{sel:'only'}})
           if(res.meta.status!==200){
               return this.$message.error('获取属性列表失败')
           }
           res.data.forEach(item=>{
            item.attr_vals =item.attr_vals.length===0 ? [] : item.attr_vals.split(',')
           })
        console.log(res.data)
           this.onlyTabData=res.data
           console.log(this.onlyTabData)
            }
        },
        handlePreview(file){
                  this.previewPath=file.response.data.url
                  this.previewVisible=true
        },
        handleRemove(file){
                const filePath=file.response.data.tem_path
               const i = this.addForm.pics.findIndex(x=>x.pic===filePath)
                 this.addForm.pics.splice(i,1)
                console.log(this.addForm)
        },
        // 监听图片上传成功事件
        handleSuccess(response){
            
            // 先拼接再push
            const picInfo = {pic:response.data.tmp_path}
            this.addForm.pics.push(picInfo)
            console.log(this.addForm)
        },
        
        add(){
            this.$refs.addFormRef.validate(async valid=>{
                if(!valid){
                    return this.$message.error('请填写必要的表单项目')
                }
              const form = _.cloneDeep(this.addForm)
                form.goods_cat=form.goods_cat.join(',')
                console.log(form)
                this.manyTabData.forEach(item=>{
                    const newInfo={
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals.join(',')
                    }
                    this.addForm.attrs.push(newInfo)
                })

                this.onlyTabData.forEach(item=>{
                    const newInfo={
                        attr_id:item.attr_id,
                        attr_value:item.attr_vals
                    }
                    this.addForm.attrs.push(newInfo)

                 
                })
                form.attrs=this.addForm.attrs
                    console.log(form)

                    // 发请求添加商品
                 const {data:res} = await this.$http.post('goods',form)
                  if(res.meta.status!==201){
               return this.$message.error('添加商品失败')
           }
           this.$message.success('添加商品成功')
           this.$router.push('/goods')
            })

        }


        
    },
    computed: {
        cateId(){
            if(this.addForm.goods_cat.length===3){
                return this.addForm.goods_cat[2]
            }
            return null
        }
    },
}
</script>
<style lang="less" scoped>
    .el-checkbox{
        margin-right: 10px !important;
    }
    .previewImg{
        width: 100%;
    }
    .btnAdd{
        margin-top: 15px;
    }
</style>